[ˈparəsʌɪt], (Noun)

Definitions:
- an organism that lives in or on an organism of another species (its host) and benefits by deriving nutrients at the other's expense
(e.g: the parasite attaches itself to the mouths of fishes)

- a person who habitually relies on or exploits others and gives nothing in return
(e.g: he was a parasite who lived off other people)


Phrases:

Origin:
mid 16th century: via Latin from Greek parasitos ‘(person) eating at another's table’, from para- ‘alongside’ + sitos ‘food’